Preparation of permeable brick for sponge city from vanadium titanium blast furnace slag and lead slag

Liu Haijun

doi:10.7513/j.issn.1004-7638.2021.01.016

Volume 42 Issue 1

Feb. 2021

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Liu Haijun. Preparation of permeable brick for sponge city from vanadium titanium blast furnace slag and lead slag[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(1): 100-105, 183. doi: 10.7513/j.issn.1004-7638.2021.01.016

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Liu Haijun. Preparation of permeable brick for sponge city from vanadium titanium blast furnace slag and lead slag[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(1): 100-105, 183. doi: 10.7513/j.issn.1004-7638.2021.01.016

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Preparation of permeable brick for sponge city from vanadium titanium blast furnace slag and lead slag

doi: 10.7513/j.issn.1004-7638.2021.01.016

Liu Haijun

Inner Mongolia Technical College of Construction, Huhehaote 010070, Inner Mongolia, China

Received Date: 2020-06-17
Publish Date: 2021-02-10

Abstract

Abstract

Permeable brick with high flexural strength and high porosity were prepared by pressure forming-pressureless sintering respectively using vanadium and titanium blast furnace slag and lead slag as raw materials and sawdust as pore-forming agent. The effects of formula compositions, sawdust addition and sintering temperature on the physical properties of the samples were studied. The structure, permeability and environmental safety of the samples were analyzed. The results show that the porosity of samples could be increased by properly decreasing the amount of blast furnace slag as well as the sintering temperature, and it can be increased by increasing the sawdust addition. When the addition of lead slag, blast furnace slag and sawdust (additional) are 50%, 50% and 20% respectively, the porosity, flexural strength and permeability coefficient of the permeable brick roasted at 1 100 ℃ are respectively 45.27%, 32.94 MPa and 1.58～2.02 cm/s. XRD and SEM analyses show that hematite, quartz and calcareous feldspar intertwine with glass phase, and the pore distribution is uniform in three-dimensional connection, which endow the permeable brick high porosity, good acid and alkali resistance. In addition, the activity of heavy metal ions is bound by glass phase, endowing the permeable brick good environmental safety. This study provides a theoretical basis for the preparation of permeable brick using vanadium titanium blast furnace and lead slag.
- vanadium titanium blast furnace slag,
- lead slag,
- permeable brick,
- porosity,
- flexural strength,
- microstructure

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References(14)

References

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